Clamping device for heddle bars or supports.



No. 729,047. 4 PATENTED MAY 25,1903. W. F. DRAPER. CLAMPING DEVICE FORHEDDLE BARS 0R SUPPORTS.

. APPLICATION FILED 001210, 1902. 10 MODEL.

a? a i 2 @25 b Z O vi gza a2 I10 .1 3 7 M memo I 7 wazemwzrrm n UNlllEDSTATES Patented May 26, 1903.

PATENT OFFICE.

WILLIAM F. DRAPER, OF I'IOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPERCOMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPO- RATION OF MAINE.

CLAMPING DEVICE FOR HEDDLE OR'SUPPORTS.

SPECIFICATION forming part of Letters Patent No. 729,047, dated May 26,1903.

Application filed October 10, 1902. Serial No. 126,661. (No model.)

To all whom it may concern.-

Be it known that 1, WILLIAM F. DRAPER, a citizen of the United States,and a resident of Hopedale, county of Worcester, State of Massachusetts,have invented an Improvement in Clamping Devices for l-Ieddle Bars orSupports, of which the following description, in connection with theaccompanying drawings, is a specification, like letters on the drawingsrepresenting like parts.

This invention relates to harness-frames for looms,and more particularlyto the type wherein the heddles also serve aswarp-stop-motioncontrolling detectors; and it has for its object theproduction of novel, simple, and eifective means for locking in placethe detachable harness or heddle support. The latter is made detachablein order that it may be readily removed or applied, as when a newwarp-beam is placed in the loom, so that the harness-frame itself is notchanged, and when for any reason one or more heddles must be removedfrom or placed upon the support.

The various novel features of myinvention will bedescribed hereinafterand particularly pointed out in the following claims.

Figure 1 is a front elevation of a harnessframe with one embodiment ofmy invention applied thereto. Fig. 2 is an enlarged longitudinalsection, on the line 2 2, Fig. 3, of one of the heads of the side bars,showing the heddle-support retained in position by the locking devicepartly illustrated in Fig. 1. Fig. 3 is an outer end elevation of thehead. Figs. at and 5 are enlarged sectional details similar to Fig. 2,but showing modified forms of the locking member; and Fig. 6 is ahorizontal section, enlarged, on the line 6 6, Fig. 5.

Referring to Fig. 1, the bottom cross-bar a of the harness-frame hassecured to it the upright side bars a, shown as rods, threaded at theirupper ends at a to enter depending threaded bosses Z) of heads I), thelatter being preferably made as castings. Each head has a longitudinalslot 12 extended therethrough,

reduced in width at itslower portion at 5 to form a seat,'its wallsbeing shown slightly convergent in Fig. 3 toward the bottom of the seat.A transverse lug or bar b crosses the seat for a purpose to bedescribed. The heddle-su pport h, shown as a fiat bar, has a notch h inits lower edge near each end to embrace the lug or bar b when the endsof the support are inserted in the seats b This prevents any relativelateral movement of the side bars of the frame and the heddle-supportwhen the latter is in position. The support is applied by inserting itsends in the slots 5 of the heads, and then it is pushed down into theseats b the notches h engaging the lugs b It is necessary to hold thesupport 72 down in its seats during the shedding operation, and to thisend I have provided each head with a locking member which is movableinto position to engage the heddle-support and retain it seated.Referring to Figs. 2 and 3, the locking device is shown as a piece ofstrong spring-wire 0, having an eye 0 at its upper end to receive apivot-pin 6 extended through the head at the upper end of the slot b Thelower end of the wire a is bent into a curved arm 0 eccentric to thepivot-pin, the cam-face thus presented being adapted to engage and bearupon the top of the heddle-support h. By pushing the locking memberfarther into the slot of the head the more firmly is the supportretained in its seat, the resiliency of the locking member preventingits accidental release, the point of contact between the cam-face andthe top of the support being practically directly beneath the fulcrum ofthe locking member..

The grip of the latter may be increased by serrating the top edge of thesupport h, as at W, Fig. 2, and similarly serrating the lower side ofthe curved arm 0 as at 0 A modified form of locking member is shown inFig 4, said member being made as a segmental plate (1, preferably ofsteel, having a curved face 01' eccentric to its fulcrum-pin 39 on whichlatter the plate is mounted in the slot of the head. In order toincrease the spring or resiliency of the plate, it is shown as made witha segmental slot d parallel to and near the cam-face d. 4

The mode of operation of the locking member will be obvious from theforegoing.

To release the heddle-support in either of the structures described, thelocking member is swung inward, the eccentricity of the camface being soformed, and the support 71 can then be lifted out of the seats andremoved from the beads by longitudinal movement.

Yet another modification is shown in Figs. 5 and 6, the locking memberfbeing madeas a solid plate having an eccentric or cam face f, and toprevent accidental release of the heddle-support I have shownleaflsprings s,

Fig. 6, secured to opposite sides of the memberfby a pin or rivetf andbearing on the front and back walls of the slot in the head, the springsbeing seated in recessesf in the opposite faces of the membersf. (SeeFig. 6.)' This spring action takes the place of the resiliency of thelocking members shown in Figs. 1 to 4, inclusive, and permits thememberfto be made solid, and it maybe a casting, if desired.

The heads I) have eyes 12 at their upper ends to receive the overheadsuspending members for the harness-frames.

The outer end of the locking member is preferably made long enough toproject beyond the outer face of the head, so that the attendant canreadily move it into inoperative position by a tap or blow when it isdesired to release the heddle-support.

My invention may be changed or modified in various particulars by thoseskilled in the art without departing from the spirit and scope of myinvention, several practical embodiments thereof being herein shown anddescribed.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

1. In a loom-harness frame, side bars having longitudinally-slottedheads, a detachable heddle-support adapted to be seated in the slottedheads, and a locking-cam on each head to engage and retain theheddle-snpport in position.

2. In a loom-harness frame, side bars having longitudinally-slottedheads, adetachable heddle-support adapted to be seated in the slottedheads, and a locking member pivotally mounted on each head, to engageand press upon the edge of and retain the heddlesupport in position.

3. In a loom-harness frame, side bars having longitudinally slottedheads, a detachable heddle-support adapted to be seated in the slottedheads, and a locking member pivotally mounted in the upper end of eachslot and having a cam-face, to engage the top of the heddle-support andretain it seated in the bottom of the slots.

4. In a loom-harness frame, side bars having longitudinally-slottedheads, a detachable heddle-support adapted to be seated in the slottedheads, means to prevent lateral movement of the heads when theheddle-support is in placc,and a cam-like locking member movably mountedon each head, to engage the top of the heddle-support and maintain itseated.

5. In a loom-harness frame, side bars having heads provided withlongitudinal slots reduced in width at their lower ends to form seats, adetachable heddle-support adapted to enter the seats and be positionedthereby, and a locking member movably mounted on each head and providedwith a cam-face, to engage the top of the heddle-support and retain itin the seats of the heads.

6. In a loom-harness frame, side bars having longitudinally-slottedheads to receive the ends of the heddle-support, the heddle-support, apivotally-mounted locking-cam in the upper end of each slot, to engagethe top of and retain the heddle-support seated, and yielding means toprevent accidental release of the locking-cams.

7. In a loom-harness frame, side bars having longitudinally-slottedheads to receive the ends of the heddle-support, the heddle-support, anda resilient locking-cam pivotally mounted on each head, to engage thetop of the heddle-support and retain it seated in the bottoms of theslots.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WILLIAM F. DRAPER.

Witnesses:

GEORGE OTIS DRAPER, ERNEST WARREN WOOD.

